{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xabd91b1de55377c8d19451589200a2fd52bd26001bf3ba23fbc1017738196e79",
    "signature": "0xf7c98738ab8df1ce19e3f4112bcd2bebfb3acf47827875535507991d6a59e9994a491b7703b93c8c8e781678b49b3853527e8c03f8969e1cb5dcbe7376b13eaf1b",
    "signer": "0x9a7f233609951E5d08f57b8018c3Cb88C0bA833d",
    "userId": "640157151"
  }
}